Valve.



L. A. DARUNG.

VALVE.

APPLICATION FILED ocT. lo. |914. 1,284,253. f Patented Nov'. 12, 19m

, 22|I y. 9/ *I nl," Y? l' Asics g E l s 6g /L i lE cli I /d A to the other endof the shaft 8 is a lever 1 5, to which any suitable connection may be made, if desired, for'operating the shaft 8 and therebycontrolling the position of the.

casing 5. Between Ysaid lever and said lever 7 is a stuliing 'box having a body 16,

packing material 17 and gland 18.

To lim`t the upward motion of the roller,

fand thereby the plunger 1, there is a stop 20 provided. This stop' is Vhere shown as adjustable with reference to the casing 5,

being perferably in the vforni of a screw, fitting into a cap 21,and` securedV there byy lock nut 22. The hole provided in the case ing fjforth'ecap 21fis` large enoughto permit the passage of plunger l, sleeve 2, spring 3, washer 4 and lever 7 thesepartsrbeing in i troduced through this hole during the"proc ess "of assembling.: Although theffstopM-ZO is vhere Yshown as* adjustable.,4V this is not necessarilythe case,'since a suitable top properly locatedwithl reference to the casing-5 is all thatis'required to limit the upward motion of the roller 6 and thereby the pliingernl.v It is, however, found to beY advantageous to beable to adjust the upward limit of the plunger 1, andthereby the maxi` mum openingof the' valve., y

There1-are'shownplugs 23' and 24; which ar'ejntroduced principally because it is more convenient to make the casing 5 with holes v5 at' these points'.

There is a chamber A inthe lower'portion O gthe casing 5" which isinl kdirect communication with al chamber B1 in the upper part of sa'idc'a'singl through the mediumof f the permanent passageway C. There is an opening or' passageway D communicating withthe chamber A,lan`d serving either'as inlet'or outlet, according to vthe particular manner. in which'the 'valve is'V employed,y

1 Said chambers A and Bpassageway C.v and opening D together constitutev the mecha'- nism chamber,throughoutl which the pressureis equal. f j

. There is' a chamber or passageway Esurrounding that portion of the sleeve 2 which contains the ports 2a. There is an opening F serving as either inlet or outlet, according to the particular use madebf vthe valve, and Acommunicating with ysaid chamberl E through` a screen 30, Said screen is not an essentialV partv of the invention, ybut is hereintroduced tol prevent the passage of dirt or the like. AComin'iuiication vbetWeen'fthev mechanism i chamber and the said chamber E is made through the ports 2l inthe sleeve 2and the plunger 1, by-it'sposition in the sleeve 2,v`

controls the ,corrin'riu nicationV between said chambers.- l f .The manuactui-eof thefvarious parts of thefvalveis extremely simple.V The plunger f lfan'dsleeve 2 can be produced by turning,

a directY controlling member wholly' inclose with the addition of a few minor opera= tions. Infthe casing 5r many ofthe/holes which `are machined have a common axis. The other partsare obviously simple.A

Since b'otl i e r1(ils iny communicating iiiclosures, there isl no tend# ency for the pressure to move this plunger in either direction, and therefore the valve.

itselfis Va balanced member. j y; I

Owing to the yfact that the kmember of the rvactuating mechanism which projects from within the casing through the wall of the casing to the outside ofsaid casing, is

so varranged OrdiSpOSed'thatits actuating movement is not influe'ncedso" as tofc'ause or tend to causefa change 'fof 'its position by any differential .pressure existingtwithin the' casing, said acti'iatingmechanism itself is a substantiallybalanced group.: Thus, in

the' embodiment s'liown, the m'n'ementl .of said' projecting member is rotative, upon an yaxis at right anglesV tothe directionof movement of the valve plunger, and hence the movement of the,l external member which causes or'permits the shifting of Vthe valve is only opposed by the rictionalresistance to rotation, lwhich may be regarded as substantially constant.

In the foregoing descriptionV andthe aci com'panying drawings theV valve4 has been described andshown-as having certain parts uppermost. Thi'sjha's been done solely for convenience of description, `as'the valve may bel used with anydesired partuppermost'. 1t will be clear that many details'ofcon'- struction may bev varied y,without departing from the spirit ofmy invention a'ndscope of the accompanyingclaims.

'I claimA as my invention:

whose v extremities present substantially similar effective pressure areas, said plu-n# "1. The; combinatiomof, a plunger'T-valve'f ger valve being provided'with a longitudil n'al ductiat the region ofone'zextremity; `a casing having an op'eningfadapted to rey ceive` said plunger and permit longitudinal movementr thereof, said` casing comprisingopening at a region adaptedtol be controlled by longitudinal movement ofv theplunger and valve actuatingk mechanism, comprising' within said` casing, and: adapted to' movev the plunger axially, v andan operating niem= ber projecting through'the wall of said casing and having movement in a direction which is vneutral Vwith relation to the direction of diiierentialpre'ssure. #L

said' chambers; said` casing" also comprising a second Vpassage Vvvay' communicatingv by a port with said opening at a region adapted tobe ControlledA by longitudinalmovement of the. plunger; i a spring operatively engaging.' said? plunger and normally tending to movevit-r in the direction. of opening said port, i said: spring being completely inclosed in saidCaSng; a` valve actuating mechanism comprising aV direct controlling 'member Wholly. n adapted. to4 move th'e'plunger axially', and

anoperating member projecting through `the Wall of said casing'. and having movement infa' direction'vvhich is neutral with relation toithedirection of;` differential pressure.y

28,4The combinationofwa "plunger valve Whose'f extremitiesirpresent substantially' similar effective pressure `areasg-fa casing having `anu-opening adapted tolreceive' said plunger valvel and permit vlongitutlrnal movement thereof', said casingcomprising a chamber atleach end` ofv saidy opening, said chambersV communicating independently of said opening, but inc'losingV the'v respective extremities ofthe valve, apassage -Way come municatingfvvith said' chambers; said cass Y ingalso rcomprisiiiga second Apassageway communicating by a port with 'said' opening at a region adapted to be controlled by longitudinal movement of the plungerg: a

n spring operatively yengaging saidplunger and normally tending toj move it inthe drection of openingsaid port, said spring be-l ing completely inclosed in said casing; a lever completelyinclosed Within said cham# ber; ashaft rigidly connectedC to said-lever and kprojecting through the vvall of the cas-y ing, the axis of said shaft being substantially v at right angles to the axis ofV the plunger, and meansr external to the casing for rocking said shaft.v

9. The combination of a `cylindrical plunger Whose extremities present' substan-A tially similar' eifective pressure areas; acasing having an opening adapted to receive said plunger, and permit longitudinal movement thereof, said casing comprising .an enlarged chamber at one extremity of said opening, and a chamber and passage v vay at the other extremityyof said opening, Asaid chambers communicating independently of saidopening, but completely incl'osing the respectivel extremities of the valve; saidV cas-V ing also comprising an? intermediate Vchamber and passage Way surrounding saidopen-y Y ing', and communicatingvr therewith by ports at a region adaptedto be controlled bylongitudinal movement ofthe plunger; a spring f operatively engaging said plunger and normally tendingto move it vin the direction of' opening theports'j; Va lever carrying a roller which bears axially upon one extrem-l ity ofthe plunger', said lever and roller being completely inclosed in said enlarged inclosed Within said! casing and chamber-gv a shaftvprojectingf'through the Walls of the casingand rigidly connected Withfsaidflever, and meansexternal to the casing, for rocking saidfshaft I 10( The combinationl of a cylindrical plunger Whose extremities presentsubstan-f tiallyv similar Veffective pressure areas; a casing having an opening adapted to receive said plunger, and permitl longitudinal move- `ment thereof, said casing comprising an-en-y largedcliamber at one extremity ofi said opening,'jaiid a chamber band passage fvva'yf at the vother extremity of said opening, {said chambers lcommi'ini'c'ating independently of said opening, VbutV completely inclosing Vthe respective extremities-ofthe valve; said cas# ingalso comprising', an 'intermediate cham-l ber and passage Way surrounding said opening, and communicating therewith by ports at a region adapted fto be controlled bylong.-

itudinalmoveinent of theplungerja' spring j operatively engaging said plunger and nors mally tending to move it inthe direction of opening the ports, said spring'being Wholly inclosed'withinf'sai'd casing; yaglever carrying a roller Which bears axially/uponl oneVV extremity Vofv the l plunger, saidv lever fand 'roller being completely inclosed in said enlarged chamber; Va shaftV projecting through the' Wall of the casing'and rigid'lyfconnected With said lever,` and means external to the casing for'rocking saidshaft. y i

1l. The combination* of, a plunger rvalve Whose extremities present substantially similar eifective pressure areas; a casing having an opening yadapted"to/receive*said plunger and permit longitudinal movement thereof, said casing comprising a chamber atv one extremityof 'said' opening and a pas-v sageWay at the other extremity of said opening, said chamber and vsaid 'passagewaycoin-l municating independentlyv of said opening,

casing having an openin'gadapted Vto rei ceive said plunger valve and permit longi tudinal 'movement' thereof, said casing comprising apressure chamber Whichcomprises tivo portions f Which inclose the lrespective extremities of said plunger valve anda ,pas` sagevvay connecting portions; asecoiid pas sageway communicating by'ports With5s'aid opening, a spring, operatively engagii'igA said plunger' and normally tending tomove it reo 1,284,253- Y [Year the direction of maximum opening betweenV Madison and Starte of Indiana. '1th day*V 'i the `pressre `chamber and the secondi pasr0f Qcrtober,1914.V

closed 1n said caslng, a Valve actuating jsageway, said Springbeng completely n- Y Y n Y* Y.

i 5 mechanism adapted to move the plungerin Y i -Wtnesssz Y Y said opening. l Y F. VP,YMCDERMO'AT, Jr.,v

Signed at Anderson,` in the; ounty Vof Y Y JOHN yA.VVA`1\1EMA1`IY.

Copies ot this patent 4may be obtained for ve cents each; by addressing the "YCommissioner of Il'avt, 1

Washington, 13.76. 

